Data Sheet

INTEGRATED CIRCUITS
DATA SHEET
TDA7056A
3 W BTL mono audio output
amplifier with DC volume control
Product specificiation
July 1994
NXP Semiconductors
Product specificiation
3 W BTL mono audio output amplifier with
DC volume control
TDA7056A
FEATURES
GENERAL DESCRIPTION
• DC volume control
The TDA7056A is a mono BTL output amplifier with DC
volume control. It is designed for use in TV and monitors,
but also suitable for battery-fed portable recorders and
radios.
• Few external components
• Mute mode
• Thermal protection
• Short-circuit proof
Missing Current Limiter (MCL)
• No switch-on and off clicks
A MCL protection circuits is built-in. The MCL circuit is
activated when the difference in current between the
output terminal of each amplifier exceeds 100 mA (typical
300 mA). This level of 100 mA allows for headphone
applications (single-ended).
• Good overall stability
• Low power consumption
• Low HF radiation
• ESD protected on all pins.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
VP
positive supply voltage range
PO
output power
Gv
voltage gain
CONDITIONS
MIN.
RL = 16 Ω; VP = 12 V
TYP.
MAX.
UNIT
4.5
−
18
V
3
3.5
−
W
34.5
35.5
36.5
dB
φ
gain control range
75
80
−
dB
IP
total quiescent current
VP = 12 V; RL = ∞
−
8
16
mA
THD
total harmonic distortion
VP = 0.5 W
−
0.3
1
%
ORDERING INFORMATION
PACKAGE
EXTENDED TYPE
NUMBER
PINS
PIN POSITION
MATERIAL
CODE
TDA7056A
9
SIL
plastic
SOT110(1)
Note
1. SOT110-1.
July 1994
2
NXP Semiconductors
Product specificiation
3 W BTL mono audio output amplifier with
DC volume control
TDA7056A
VP
handbook, full pagewidth
2
n.c.
n.c.
positive input
DC volume control
1
TDA7056A
9
I + i
6
I – i
8
positive output
3
5
STABILIZER
Vref
negative output
TEMPERATURE
PROTECTION
4
7
MGA072 - 1
power
ground
signal
ground
Fig.1 Block diagram.
PINNING
SYMBOL
PIN
DESCRIPTION
n.c.
1
not connected
VP
2
positive supply voltage
VI
3
voltage input
GND1
4
signal ground
VC
5
DC volume control
OUT+
6
positive output
GND2
7
power ground
OUT−
8
n.c.
9
handbook, halfpage
n.c.
1
VP
2
VI
3
GND1
4
VC
5
negative output
OUT+
6
not connected
GND2
7
OUT−
8
n.c.
9
TDA7056A
MGA071
Fig.2 Pin configuration.
July 1994
3
NXP Semiconductors
Product specificiation
3 W BTL mono audio output amplifier with
DC volume control
FUNCTIONAL DESCRIPTION
TDA7056A
Thus, a reduced power supply and smaller capacitors can
be used which results in cost savings.
The TDA7056A is a mono BTL output amplifier with DC
volume control, designed for use in TV and monitor but
also suitable for battery-fed portable recorders and radios.
For portable applications there is a trend to decrease the
supply voltage, resulting in a reduction of output power at
conventional output stages. Using the BTL principle
increases the output power.
In conventional DC volume circuits the control or input
stage is AC coupled to the output stage via external
capacitor to keep the offset voltage low.
The maximum gain of the amplifier is fixed at 35.5 dB. The
DC volume control stage has a logarithmic control
characteristic.
In the TDA7056A the DC volume stage is integrated into
the input stage so that coupling capacitors are not required
and a low offset voltage is maintained.
The total gain can be controlled from 35.5 dB to −44 dB.
At the same time the minimum supply voltage remains low.
If the DC volume control voltage is below 0.3 V, the device
switches to the mute mode.
The BTL principle offers the following advantages:
The amplifier is short-circuit proof to ground, VP and
across the load. A thermal protection circuit is also
implemented. If the crystal temperature rises above
+150 °C the gain will be reduced, thereby reducing the
output power.
Special attention is given to switch-on and off clicks, low
HF radiation and a good overall stability.
• lower peak value of the supply current
• the frequency of the ripple on the supply voltage is twice
the signal frequency
LIMITING VALUES
In accordance with the Absolute Maximum System (IEC 134).
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
VP
supply voltage range
−
18
V
IORM
repetitive peak output current
−
1.25
A
IOSM
non repetitive peak output current
−
1.5
A
Ptot
total power dissipation
−
9
W
Tamb
operating ambient temperature range
Tcase < 60 °C
−40
+85
°C
Tstg
storage temperature range
−55
+150
°C
Tvj
virtual junction temperature
−
+150
°C
Tsc
short-circuit time
−
1
hr
V3
input voltage pin 3
−
8
V
V5
input voltage pin 5
−
8
V
THERMAL RESISTANCE
SYMBOL
PARAMETER
THERMAL RESISTANCE
Rth j-a
from junction to ambient in free air
55 K/W
Rth j-c
from junction to case
10 K/W
Note to the thermal resistance
VP = 12 V; RL = 16 Ω; The maximum sine-wave dissipation is = 1.8 W. The Rth vj-a of the package is 55 K/W;
Tamb (max) = 150 − 55 x 1.8 = 51 °C
July 1994
4
NXP Semiconductors
Product specificiation
3 W BTL mono audio output amplifier with
DC volume control
TDA7056A
CHARACTERISTICS
VP = 12 V; f = 1 kHz; RL = 16 Ω; Tamb = 25 °C; unless otherwise specified (see Fig.6)
SYMBOL
PARAMETER
VP
positive supply voltage range
IP
total quiescent current
CONDITIONS
MIN.
TYP.
MAX.
UNIT
4.5
−
18
V
VP = 12 V; RL = ∞; note 1
−
8
16
mA
THD = 10%; RL = 16 Ω
3
3.5
−
W
THD = 10%; RL = 8 Ω
−
5.2
−
W
PO = 0.5 W
−
0.3
1
%
34.5
35.5
36.5
dB
Maximum gain (V5 = 1.4 V)
PO
output power
THD
total harmonic distortion
Gv
voltage gain
VI
input signal handling
V5 = 0.8 V;THD < 1%
0.5
0.65
−
V
Vno(rms)
noise output voltage (RMS value)
f = 500 kHz; note 2
−
210
−
μV
B
bandwidth
at −1 dB
−
20 Hz to
300 kHz
−
SVRR
supply voltage ripple rejection
note 3
38
46
−
dB
|Voff|
DC output offset voltage
−
0
150
mV
ZI
input impedance pin 3
15
20
25
kΩ
−
−44
−
dB
note 4
−
20
30
μV
V5 ≤ 0.3 V; VI = 600 mV
−
−
30
μV
75
80
−
dB
60
70
80
μA
Minimum gain (V5 = 0.5 V)
Gv
voltage gain
Vno(rms)
noise output voltage (RMS value)
Mute position
VO
output voltage in mute position
DC volume control
φ
gain control range
I5
control current
V5 = 0 V
Notes to the characteristics
1. With a load connected to the outputs the quiescent current will increase, the maximum value of this increase being
equal to the DC output offset voltage divided by RL.
2. The noise output voltage (RMS value) at f = 500 kHz is measured with RS = 0 Ω and bandwidth = 5 kHz.
3. The ripple rejection is measured with RS = 0 Ω and f = 100 Hz to 10 kHz. The ripple voltage of 200 mV (RMS value)
is applied to the positive supply rail.
4. The noise output voltage (RMS value) is measured with RS = 5 kΩ unweighted.
July 1994
5
NXP Semiconductors
Product specificiation
3 W BTL mono audio output amplifier with
DC volume control
TDA7056A
MGA075
MGA076 - 1
1000
handbook,
halfpage
handbook,40
halfpage
gain
V
noise
(μV)
800
(dB)
20
0
600
– 20
400
– 40
200
– 60
0
– 80
0
0.4
0.8
1.2
1.6
0
2.0
V5 (V)
MGA077 - 1
100
I5
(μA)
60
20
– 20
– 60
– 100
0.8
1.2
1.6
2.0
V5 (V)
Fig.5 Control current as a function of DC volume
control.
July 1994
1.2
2.0
1.6
Fig.4 Noise output voltage as a function of DC
volume control.
handbook, halfpage
0.4
0.8
V5 (V)
Fig.3 Gain as a function of DC volume control.
0
0.4
6
NXP Semiconductors
Product specificiation
3 W BTL mono audio output amplifier with
DC volume control
TDA7056A
APPLICATION INFORMATION
(1)
VP
handbook, full pagewidth
100
nF
220 μF
2
1
n.c.
9
n.c.
0.47 μF
positive
input
TDA7056A
I + i
6
3
5
R L = 16 Ω
I – i
8
5
kΩ
RS
STABILIZER
Vref
TEMPERATURE
PROTECTION
DC
volume
control
4
7
MGA073 - 1
ground
(1) This capacitor can be omitted if the 220 μF electrolytic capacitor is connected close to pin 2.
Fig.6 Test and application diagram.
handbook, halfpage
5
100 kΩ
MGA074
volume
control
Fig.7 Application using a potentiometer for
volume control; Gv = 30 dB.
July 1994
7
NXP Semiconductors
Product specificiation
3 W BTL mono audio output amplifier with
DC volume control
TDA7056A
PACKAGE OUTLINE
SIL9MPF: plastic single in-line medium power package with fin; 9 leads
SOT110-1
D
D1
q
A2
P1
P
A3
q1
q2
A
A4
seating plane
E
pin 1 index
c
L
1
9
b
e
Z
Q
b2
w M
b1
0
5
10 mm
scale
DIMENSIONS (mm are the original dimensions)
UNIT
A
A2
max.
A3
A4
b
b1
b2
c
D (1)
D1
E (1)
e
L
P
P1
Q
q
q1
q2
w
Z (1)
max.
mm
18.5
17.8
3.7
8.7
8.0
15.8
15.4
1.40
1.14
0.67
0.50
1.40
1.14
0.48
0.38
21.8
21.4
21.4
20.7
6.48
6.20
2.54
3.9
3.4
2.75
2.50
3.4
3.2
1.75
1.55
15.1
14.9
4.4
4.2
5.9
5.7
0.25
1
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
OUTLINE
VERSION
REFERENCES
IEC
JEDEC
JEITA
ISSUE DATE
95-02-25
03-03-12
SOT110-1
July 1994
EUROPEAN
PROJECTION
8
NXP Semiconductors
Product specificiation
3 W BTL mono audio output amplifier with
DC volume control
SOLDERING
TDA7056A
with the joint for more than 5 seconds. The total contact
time of successive solder waves must not exceed
5 seconds.
Introduction
There is no soldering method that is ideal for all IC
packages. Wave soldering is often preferred when
through-hole and surface mounted components are mixed
on one printed-circuit board. However, wave soldering is
not always suitable for surface mounted ICs, or for
printed-circuits with high population densities. In these
situations reflow soldering is often used.
The device may be mounted up to the seating plane, but
the temperature of the plastic body must not exceed the
specified maximum storage temperature (Tstg max). If the
printed-circuit board has been pre-heated, forced cooling
may be necessary immediately after soldering to keep the
temperature within the permissible limit.
Repairing soldered joints
This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our “IC Package Databook” (order code 9398 652 90011).
Apply a low voltage soldering iron (less than 24 V) to the
lead(s) of the package, below the seating plane or not
more than 2 mm above it. If the temperature of the
soldering iron bit is less than 300 °C it may remain in
contact for up to 10 seconds. If the bit temperature is
between 300 and 400 °C, contact may be up to 5 seconds.
Soldering by dipping or by wave
The maximum permissible temperature of the solder is
260 °C; solder at this temperature must not be in contact
DATA SHEET STATUS
DOCUMENT
STATUS(1)
Objective data sheet
PRODUCT
STATUS(2)
DEFINITION
Development
This document contains data from the objective specification for product
development.
Preliminary data sheet
Qualification
This document contains data from the preliminary specification.
Product data sheet
Production
This document contains the product specification.
Notes
1. Please consult the most recently issued document before initiating or completing a design.
2. The product status of device(s) described in this document may have changed since this document was published
and may differ in case of multiple devices. The latest product status information is available on the Internet at
URL http://www.nxp.com.
DISCLAIMERS
(including negligence), warranty, breach of contract or any
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document is believed to be accurate and reliable.
However, NXP Semiconductors does not give any
representations or warranties, expressed or implied, as to
the accuracy or completeness of such information and
shall have no liability for the consequences of use of such
information.
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for any reason whatsoever, NXP Semiconductors’
aggregate and cumulative liability towards customer for
the products described herein shall be limited in
accordance with the Terms and conditions of commercial
sale of NXP Semiconductors.
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reserves the right to make changes to information
published in this document, including without limitation
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charges) whether or not such damages are based on tort
July 1994
9
NXP Semiconductors
Product specificiation
3 W BTL mono audio output amplifier with
DC volume control
Suitability for use ⎯ NXP Semiconductors products are
not designed, authorized or warranted to be suitable for
use in life support, life-critical or safety-critical systems or
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Quick reference data ⎯ The Quick reference data is an
extract of the product data given in the Limiting values and
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Semiconductors’ standard warranty and NXP
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Limiting values ⎯ Stress above one or more limiting
values (as defined in the Absolute Maximum Ratings
System of IEC 60134) will cause permanent damage to
the device. Limiting values are stress ratings only and
(proper) operation of the device at these or any other
conditions above those given in the Recommended
operating conditions section (if present) or the
Characteristics sections of this document is not warranted.
Constant or repeated exposure to limiting values will
permanently and irreversibly affect the quality and
reliability of the device.
July 1994
TDA7056A
10
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Customer notification
This data sheet was changed to reflect the new company name NXP Semiconductors, including new legal
definitions and disclaimers. No changes were made to the technical content, except for package outline
drawings which were updated to the latest version.
Contact information
For additional information please visit: http://www.nxp.com
For sales offices addresses send e-mail to: [email protected]
© NXP B.V. 2010
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
Printed in The Netherlands
RM5/02/pp11
Date of release: July 1994
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